[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / gpu / drm / ast / ast_main.c

/*
 * Copyright 2012 Red Hat Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 * USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 */
/*
 * Authors: Dave Airlie <airlied@redhat.com>
 */
#include "drmP.h"
#include "ast_drv.h"


#include "drm_fb_helper.h"
#include "drm_crtc_helper.h"

#include "ast_dram_tables.h"

void ast_set_index_reg_mask(struct ast_private *ast,
			    uint32_t base, uint8_t index,
			    uint8_t mask, uint8_t val)
{
	u8 tmp;
	ast_io_write8(ast, base, index);
	tmp = (ast_io_read8(ast, base + 1) & mask) | val;
	ast_set_index_reg(ast, base, index, tmp);
}

uint8_t ast_get_index_reg(struct ast_private *ast,
			  uint32_t base, uint8_t index)
{
	uint8_t ret;
	ast_io_write8(ast, base, index);
	ret = ast_io_read8(ast, base + 1);
	return ret;
}

uint8_t ast_get_index_reg_mask(struct ast_private *ast,
			       uint32_t base, uint8_t index, uint8_t mask)
{
	uint8_t ret;
	ast_io_write8(ast, base, index);
	ret = ast_io_read8(ast, base + 1) & mask;
	return ret;
}


static int ast_detect_chip(struct drm_device *dev)
{
	struct ast_private *ast = dev->dev_private;

	if (dev->pdev->device == PCI_CHIP_AST1180) {
		ast->chip = AST1100;
		DRM_INFO("AST 1180 detected\n");
	} else {
		if (dev->pdev->revision >= 0x20) {
			ast->chip = AST2300;
			DRM_INFO("AST 2300 detected\n");
		} else if (dev->pdev->revision >= 0x10) {
			uint32_t data;
			ast_write32(ast, 0xf004, 0x1e6e0000);
			ast_write32(ast, 0xf000, 0x1);

			data = ast_read32(ast, 0x1207c);
			switch (data & 0x0300) {
			case 0x0200:
				ast->chip = AST1100;
				DRM_INFO("AST 1100 detected\n");
				break;
			case 0x0100:
				ast->chip = AST2200;
				DRM_INFO("AST 2200 detected\n");
				break;
			case 0x0000:
				ast->chip = AST2150;
				DRM_INFO("AST 2150 detected\n");
				break;
			default:
				ast->chip = AST2100;
				DRM_INFO("AST 2100 detected\n");
				break;
			}
			ast->vga2_clone = false;
		} else {
			ast->chip = 2000;
			DRM_INFO("AST 2000 detected\n");
		}
	}
	return 0;
}

static int ast_get_dram_info(struct drm_device *dev)
{
	struct ast_private *ast = dev->dev_private;
	uint32_t data, data2;
	uint32_t denum, num, div, ref_pll;

	ast_write32(ast, 0xf004, 0x1e6e0000);
	ast_write32(ast, 0xf000, 0x1);


	ast_write32(ast, 0x10000, 0xfc600309);

	do {
		;
	} while (ast_read32(ast, 0x10000) != 0x01);
	data = ast_read32(ast, 0x10004);

	if (data & 0x400)
		ast->dram_bus_width = 16;
	else
		ast->dram_bus_width = 32;

	if (ast->chip == AST2300) {
		switch (data & 0x03) {
		case 0:
			ast->dram_type = AST_DRAM_512Mx16;
			break;
		default:
		case 1:
			ast->dram_type = AST_DRAM_1Gx16;
			break;
		case 2:
			ast->dram_type = AST_DRAM_2Gx16;
			break;
		case 3:
			ast->dram_type = AST_DRAM_4Gx16;
			break;
		}
	} else {
		switch (data & 0x0c) {
		case 0:
		case 4:
			ast->dram_type = AST_DRAM_512Mx16;
			break;
		case 8:
			if (data & 0x40)
				ast->dram_type = AST_DRAM_1Gx16;
			else
				ast->dram_type = AST_DRAM_512Mx32;
			break;
		case 0xc:
			ast->dram_type = AST_DRAM_1Gx32;
			break;
		}
	}

	data = ast_read32(ast, 0x10120);
	data2 = ast_read32(ast, 0x10170);
	if (data2 & 0x2000)
		ref_pll = 14318;
	else
		ref_pll = 12000;

	denum = data & 0x1f;
	num = (data & 0x3fe0) >> 5;
	data = (data & 0xc000) >> 14;
	switch (data) {
	case 3:
		div = 0x4;
		break;
	case 2:
	case 1:
		div = 0x2;
		break;
	default:
		div = 0x1;
		break;
	}
	ast->mclk = ref_pll * (num + 2) / (denum + 2) * (div * 1000);
	return 0;
}

uint32_t ast_get_max_dclk(struct drm_device *dev, int bpp)
{
	struct ast_private *ast = dev->dev_private;
	uint32_t dclk, jreg;
	uint32_t dram_bus_width, mclk, dram_bandwidth, actual_dram_bandwidth, dram_efficency = 500;

	dram_bus_width = ast->dram_bus_width;
	mclk = ast->mclk;

	if (ast->chip == AST2100 ||
	    ast->chip == AST1100 ||
	    ast->chip == AST2200 ||
	    ast->chip == AST2150 ||
	    ast->dram_bus_width == 16)
		dram_efficency = 600;
	else if (ast->chip == AST2300)
		dram_efficency = 400;

	dram_bandwidth = mclk * dram_bus_width * 2 / 8;
	actual_dram_bandwidth = dram_bandwidth * dram_efficency / 1000;

	if (ast->chip == AST1180)
		dclk = actual_dram_bandwidth / ((bpp + 1) / 8);
	else {
		jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff);
		if ((jreg & 0x08) && (ast->chip == AST2000))
			dclk = actual_dram_bandwidth / ((bpp + 1 + 16) / 8);
		else if ((jreg & 0x08) && (bpp == 8))
			dclk = actual_dram_bandwidth / ((bpp + 1 + 24) / 8);
		else
			dclk = actual_dram_bandwidth / ((bpp + 1) / 8);
	}

	if (ast->chip == AST2100 ||
	    ast->chip == AST2200 ||
	    ast->chip == AST2300 ||
	    ast->chip == AST1180) {
		if (dclk > 200)
			dclk = 200;
	} else {
		if (dclk > 165)
			dclk = 165;
	}

	return dclk;
}

static void ast_user_framebuffer_destroy(struct drm_framebuffer *fb)
{
	struct ast_framebuffer *ast_fb = to_ast_framebuffer(fb);
	if (ast_fb->obj)
		drm_gem_object_unreference_unlocked(ast_fb->obj);

	drm_framebuffer_cleanup(fb);
	kfree(fb);
}

static int ast_user_framebuffer_create_handle(struct drm_framebuffer *fb,
					      struct drm_file *file,
					      unsigned int *handle)
{
	return -EINVAL;
}

static const struct drm_framebuffer_funcs ast_fb_funcs = {
	.destroy = ast_user_framebuffer_destroy,
	.create_handle = ast_user_framebuffer_create_handle,
};


int ast_framebuffer_init(struct drm_device *dev,
			 struct ast_framebuffer *ast_fb,
			 struct drm_mode_fb_cmd2 *mode_cmd,
			 struct drm_gem_object *obj)
{
	int ret;

	ret = drm_framebuffer_init(dev, &ast_fb->base, &ast_fb_funcs);
	if (ret) {
		DRM_ERROR("framebuffer init failed %d\n", ret);
		return ret;
	}
	drm_helper_mode_fill_fb_struct(&ast_fb->base, mode_cmd);
	ast_fb->obj = obj;
	return 0;
}

static struct drm_framebuffer *
ast_user_framebuffer_create(struct drm_device *dev,
	       struct drm_file *filp,
	       struct drm_mode_fb_cmd2 *mode_cmd)
{
	struct drm_gem_object *obj;
	struct ast_framebuffer *ast_fb;
	int ret;

	obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]);
	if (obj == NULL)
		return ERR_PTR(-ENOENT);

	ast_fb = kzalloc(sizeof(*ast_fb), GFP_KERNEL);
	if (!ast_fb) {
		drm_gem_object_unreference_unlocked(obj);
		return ERR_PTR(-ENOMEM);
	}

	ret = ast_framebuffer_init(dev, ast_fb, mode_cmd, obj);
	if (ret) {
		drm_gem_object_unreference_unlocked(obj);
		kfree(ast_fb);
		return ERR_PTR(ret);
	}
	return &ast_fb->base;
}

static const struct drm_mode_config_funcs ast_mode_funcs = {
	.fb_create = ast_user_framebuffer_create,
};

static u32 ast_get_vram_info(struct drm_device *dev)
{
	struct ast_private *ast = dev->dev_private;
	u8 jreg;

	ast_open_key(ast);

	jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff);
	switch (jreg & 3) {
	case 0: return AST_VIDMEM_SIZE_8M;
	case 1: return AST_VIDMEM_SIZE_16M;
	case 2: return AST_VIDMEM_SIZE_32M;
	case 3: return AST_VIDMEM_SIZE_64M;
	}
	return AST_VIDMEM_DEFAULT_SIZE;
}

int ast_driver_load(struct drm_device *dev, unsigned long flags)
{
	struct ast_private *ast;
	int ret = 0;

	ast = kzalloc(sizeof(struct ast_private), GFP_KERNEL);
	if (!ast)
		return -ENOMEM;

	dev->dev_private = ast;
	ast->dev = dev;

	ast->regs = pci_iomap(dev->pdev, 1, 0);
	if (!ast->regs) {
		ret = -EIO;
		goto out_free;
	}
	ast->ioregs = pci_iomap(dev->pdev, 2, 0);
	if (!ast->ioregs) {
		ret = -EIO;
		goto out_free;
	}

	ast_detect_chip(dev);

	if (ast->chip != AST1180) {
		ast_get_dram_info(dev);
		ast->vram_size = ast_get_vram_info(dev);
		DRM_INFO("dram %d %d %d %08x\n", ast->mclk, ast->dram_type, ast->dram_bus_width, ast->vram_size);
	}

	ret = ast_mm_init(ast);
	if (ret)
		goto out_free;

	drm_mode_config_init(dev);

	dev->mode_config.funcs = (void *)&ast_mode_funcs;
	dev->mode_config.min_width = 0;
	dev->mode_config.min_height = 0;
	dev->mode_config.preferred_depth = 24;
	dev->mode_config.prefer_shadow = 1;

	if (ast->chip == AST2100 ||
	    ast->chip == AST2200 ||
	    ast->chip == AST2300 ||
	    ast->chip == AST1180) {
		dev->mode_config.max_width = 1920;
		dev->mode_config.max_height = 2048;
	} else {
		dev->mode_config.max_width = 1600;
		dev->mode_config.max_height = 1200;
	}

	ret = ast_mode_init(dev);
	if (ret)
		goto out_free;

	ret = ast_fbdev_init(dev);
	if (ret)
		goto out_free;

	return 0;
out_free:
	kfree(ast);
	dev->dev_private = NULL;
	return ret;
}

int ast_driver_unload(struct drm_device *dev)
{
	struct ast_private *ast = dev->dev_private;

	ast_mode_fini(dev);
	ast_fbdev_fini(dev);
	drm_mode_config_cleanup(dev);

	ast_mm_fini(ast);
	pci_iounmap(dev->pdev, ast->ioregs);
	pci_iounmap(dev->pdev, ast->regs);
	kfree(ast);
	return 0;
}

int ast_gem_create(struct drm_device *dev,
		   u32 size, bool iskernel,
		   struct drm_gem_object **obj)
{
	struct ast_bo *astbo;
	int ret;

	*obj = NULL;

	size = roundup(size, PAGE_SIZE);
	if (size == 0)
		return -EINVAL;

	ret = ast_bo_create(dev, size, 0, 0, &astbo);
	if (ret) {
		if (ret != -ERESTARTSYS)
			DRM_ERROR("failed to allocate GEM object\n");
		return ret;
	}
	*obj = &astbo->gem;
	return 0;
}

int ast_dumb_create(struct drm_file *file,
		    struct drm_device *dev,
		    struct drm_mode_create_dumb *args)
{
	int ret;
	struct drm_gem_object *gobj;
	u32 handle;

	args->pitch = args->width * ((args->bpp + 7) / 8);
	args->size = args->pitch * args->height;

	ret = ast_gem_create(dev, args->size, false,
			     &gobj);
	if (ret)
		return ret;

	ret = drm_gem_handle_create(file, gobj, &handle);
	drm_gem_object_unreference_unlocked(gobj);
	if (ret)
		return ret;

	args->handle = handle;
	return 0;
}

int ast_dumb_destroy(struct drm_file *file,
		     struct drm_device *dev,
		     uint32_t handle)
{
	return drm_gem_handle_delete(file, handle);
}

int ast_gem_init_object(struct drm_gem_object *obj)
{
	BUG();
	return 0;
}

void ast_bo_unref(struct ast_bo **bo)
{
	struct ttm_buffer_object *tbo;

	if ((*bo) == NULL)
		return;

	tbo = &((*bo)->bo);
	ttm_bo_unref(&tbo);
	if (tbo == NULL)
		*bo = NULL;

}
void ast_gem_free_object(struct drm_gem_object *obj)
{
	struct ast_bo *ast_bo = gem_to_ast_bo(obj);

	if (!ast_bo)
		return;
	ast_bo_unref(&ast_bo);
}


static inline u64 ast_bo_mmap_offset(struct ast_bo *bo)
{
	return bo->bo.addr_space_offset;
}
int
ast_dumb_mmap_offset(struct drm_file *file,
		     struct drm_device *dev,
		     uint32_t handle,
		     uint64_t *offset)
{
	struct drm_gem_object *obj;
	int ret;
	struct ast_bo *bo;

	mutex_lock(&dev->struct_mutex);
	obj = drm_gem_object_lookup(dev, file, handle);
	if (obj == NULL) {
		ret = -ENOENT;
		goto out_unlock;
	}

	bo = gem_to_ast_bo(obj);
	*offset = ast_bo_mmap_offset(bo);

	drm_gem_object_unreference(obj);
	ret = 0;
out_unlock:
	mutex_unlock(&dev->struct_mutex);
	return ret;

}
Commit	Line	Data
312fec14 DA	1	/*
	2	* Copyright 2012 Red Hat Inc.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the
	6	* "Software"), to deal in the Software without restriction, including
	7	* without limitation the rights to use, copy, modify, merge, publish,
	8	* distribute, sub license, and/or sell copies of the Software, and to
	9	* permit persons to whom the Software is furnished to do so, subject to
	10	* the following conditions:
	11	*
	12	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	13	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	14	* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
	15	* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
	16	* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
	17	* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
	18	* USE OR OTHER DEALINGS IN THE SOFTWARE.
	19	*
	20	* The above copyright notice and this permission notice (including the
	21	* next paragraph) shall be included in all copies or substantial portions
	22	* of the Software.
	23	*
	24	*/
	25	/*
	26	* Authors: Dave Airlie <airlied@redhat.com>
	27	*/
	28	#include "drmP.h"
	29	#include "ast_drv.h"
	30
	31
	32	#include "drm_fb_helper.h"
	33	#include "drm_crtc_helper.h"
	34
	35	#include "ast_dram_tables.h"
	36
	37	void ast_set_index_reg_mask(struct ast_private *ast,
	38	uint32_t base, uint8_t index,
	39	uint8_t mask, uint8_t val)
	40	{
	41	u8 tmp;
	42	ast_io_write8(ast, base, index);
	43	tmp = (ast_io_read8(ast, base + 1) & mask) \| val;
	44	ast_set_index_reg(ast, base, index, tmp);
	45	}
	46
	47	uint8_t ast_get_index_reg(struct ast_private *ast,
	48	uint32_t base, uint8_t index)
	49	{
	50	uint8_t ret;
	51	ast_io_write8(ast, base, index);
	52	ret = ast_io_read8(ast, base + 1);
	53	return ret;
	54	}
	55
	56	uint8_t ast_get_index_reg_mask(struct ast_private *ast,
	57	uint32_t base, uint8_t index, uint8_t mask)
	58	{
	59	uint8_t ret;
	60	ast_io_write8(ast, base, index);
	61	ret = ast_io_read8(ast, base + 1) & mask;
	62	return ret;
	63	}
	64
65
66	static int ast_detect_chip(struct drm_device *dev)
67	{
68	struct ast_private *ast = dev->dev_private;
69
70	if (dev->pdev->device == PCI_CHIP_AST1180) {
71	ast->chip = AST1100;
72	DRM_INFO("AST 1180 detected\n");
73	} else {
74	if (dev->pdev->revision >= 0x20) {
75	ast->chip = AST2300;
76	DRM_INFO("AST 2300 detected\n");
77	} else if (dev->pdev->revision >= 0x10) {
78	uint32_t data;
79	ast_write32(ast, 0xf004, 0x1e6e0000);
80	ast_write32(ast, 0xf000, 0x1);
81
82	data = ast_read32(ast, 0x1207c);
83	switch (data & 0x0300) {
84	case 0x0200:
85	ast->chip = AST1100;
86	DRM_INFO("AST 1100 detected\n");
87	break;
88	case 0x0100:
89	ast->chip = AST2200;
90	DRM_INFO("AST 2200 detected\n");
91	break;
92	case 0x0000:
93	ast->chip = AST2150;
94	DRM_INFO("AST 2150 detected\n");
95	break;
96	default:
97	ast->chip = AST2100;
98	DRM_INFO("AST 2100 detected\n");
99	break;
100	}
101	ast->vga2_clone = false;
102	} else {
103	ast->chip = 2000;
104	DRM_INFO("AST 2000 detected\n");
105	}
106	}
107	return 0;
108	}
109
110	static int ast_get_dram_info(struct drm_device *dev)
111	{
112	struct ast_private *ast = dev->dev_private;
113	uint32_t data, data2;
114	uint32_t denum, num, div, ref_pll;
115
116	ast_write32(ast, 0xf004, 0x1e6e0000);
117	ast_write32(ast, 0xf000, 0x1);
118
119
120	ast_write32(ast, 0x10000, 0xfc600309);
121
122	do {
123	;
124	} while (ast_read32(ast, 0x10000) != 0x01);
125	data = ast_read32(ast, 0x10004);
126
127	if (data & 0x400)
128	ast->dram_bus_width = 16;
129	else
130	ast->dram_bus_width = 32;
131
132	if (ast->chip == AST2300) {
133	switch (data & 0x03) {
134	case 0:
135	ast->dram_type = AST_DRAM_512Mx16;
136	break;
137	default:
138	case 1:
139	ast->dram_type = AST_DRAM_1Gx16;
140	break;
141	case 2:
142	ast->dram_type = AST_DRAM_2Gx16;
143	break;
144	case 3:
145	ast->dram_type = AST_DRAM_4Gx16;
146	break;
147	}
148	} else {
149	switch (data & 0x0c) {
150	case 0:
151	case 4:
152	ast->dram_type = AST_DRAM_512Mx16;
153	break;
154	case 8:
155	if (data & 0x40)
156	ast->dram_type = AST_DRAM_1Gx16;
157	else
158	ast->dram_type = AST_DRAM_512Mx32;
159	break;
160	case 0xc:
161	ast->dram_type = AST_DRAM_1Gx32;
162	break;
163	}
164	}
165
166	data = ast_read32(ast, 0x10120);
167	data2 = ast_read32(ast, 0x10170);
168	if (data2 & 0x2000)
169	ref_pll = 14318;
170	else
171	ref_pll = 12000;
172
173	denum = data & 0x1f;
174	num = (data & 0x3fe0) >> 5;
175	data = (data & 0xc000) >> 14;
176	switch (data) {
177	case 3:
178	div = 0x4;
179	break;
180	case 2:
181	case 1:
182	div = 0x2;
183	break;
184	default:
185	div = 0x1;
186	break;
187	}
188	ast->mclk = ref_pll * (num + 2) / (denum + 2) * (div * 1000);
189	return 0;
190	}
191
192	uint32_t ast_get_max_dclk(struct drm_device *dev, int bpp)
193	{
194	struct ast_private *ast = dev->dev_private;
195	uint32_t dclk, jreg;
196	uint32_t dram_bus_width, mclk, dram_bandwidth, actual_dram_bandwidth, dram_efficency = 500;
197
198	dram_bus_width = ast->dram_bus_width;
199	mclk = ast->mclk;
200
201	if (ast->chip == AST2100 \|\|
202	ast->chip == AST1100 \|\|
203	ast->chip == AST2200 \|\|
204	ast->chip == AST2150 \|\|
205	ast->dram_bus_width == 16)
206	dram_efficency = 600;
207	else if (ast->chip == AST2300)
208	dram_efficency = 400;
209
210	dram_bandwidth = mclk * dram_bus_width * 2 / 8;
211	actual_dram_bandwidth = dram_bandwidth * dram_efficency / 1000;
212
213	if (ast->chip == AST1180)
214	dclk = actual_dram_bandwidth / ((bpp + 1) / 8);
215	else {
216	jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff);
217	if ((jreg & 0x08) && (ast->chip == AST2000))
218	dclk = actual_dram_bandwidth / ((bpp + 1 + 16) / 8);
219	else if ((jreg & 0x08) && (bpp == 8))
220	dclk = actual_dram_bandwidth / ((bpp + 1 + 24) / 8);
221	else
222	dclk = actual_dram_bandwidth / ((bpp + 1) / 8);
223	}
224
225	if (ast->chip == AST2100 \|\|
226	ast->chip == AST2200 \|\|
227	ast->chip == AST2300 \|\|
228	ast->chip == AST1180) {
229	if (dclk > 200)
230	dclk = 200;
231	} else {
232	if (dclk > 165)
233	dclk = 165;
234	}
235
236	return dclk;
237	}
238
239	static void ast_user_framebuffer_destroy(struct drm_framebuffer *fb)
240	{
241	struct ast_framebuffer *ast_fb = to_ast_framebuffer(fb);
242	if (ast_fb->obj)
243	drm_gem_object_unreference_unlocked(ast_fb->obj);
244
245	drm_framebuffer_cleanup(fb);
246	kfree(fb);
247	}
248
249	static int ast_user_framebuffer_create_handle(struct drm_framebuffer *fb,
250	struct drm_file *file,
251	unsigned int *handle)
252	{
253	return -EINVAL;
254	}
255
256	static const struct drm_framebuffer_funcs ast_fb_funcs = {
257	.destroy = ast_user_framebuffer_destroy,
258	.create_handle = ast_user_framebuffer_create_handle,
259	};
260
261
262	int ast_framebuffer_init(struct drm_device *dev,
263	struct ast_framebuffer *ast_fb,
264	struct drm_mode_fb_cmd2 *mode_cmd,
265	struct drm_gem_object *obj)
266	{
267	int ret;
268
269	ret = drm_framebuffer_init(dev, &ast_fb->base, &ast_fb_funcs);
270	if (ret) {
271	DRM_ERROR("framebuffer init failed %d\n", ret);
272	return ret;
273	}
274	drm_helper_mode_fill_fb_struct(&ast_fb->base, mode_cmd);
275	ast_fb->obj = obj;
276	return 0;
277	}
278
279	static struct drm_framebuffer *
280	ast_user_framebuffer_create(struct drm_device *dev,
281	struct drm_file *filp,
282	struct drm_mode_fb_cmd2 *mode_cmd)
283	{
284	struct drm_gem_object *obj;
285	struct ast_framebuffer *ast_fb;
286	int ret;
287
288	obj = drm_gem_object_lookup(dev, filp, mode_cmd->handles[0]);
289	if (obj == NULL)
290	return ERR_PTR(-ENOENT);
291
292	ast_fb = kzalloc(sizeof(*ast_fb), GFP_KERNEL);
293	if (!ast_fb) {
294	drm_gem_object_unreference_unlocked(obj);
295	return ERR_PTR(-ENOMEM);
296	}
297
298	ret = ast_framebuffer_init(dev, ast_fb, mode_cmd, obj);
299	if (ret) {
300	drm_gem_object_unreference_unlocked(obj);
301	kfree(ast_fb);
302	return ERR_PTR(ret);
303	}
304	return &ast_fb->base;
305	}
306
307	static const struct drm_mode_config_funcs ast_mode_funcs = {
308	.fb_create = ast_user_framebuffer_create,
309	};
310
311	static u32 ast_get_vram_info(struct drm_device *dev)
312	{
313	struct ast_private *ast = dev->dev_private;
314	u8 jreg;
315
316	ast_open_key(ast);
317
318	jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xaa, 0xff);
319	switch (jreg & 3) {
320	case 0: return AST_VIDMEM_SIZE_8M;
321	case 1: return AST_VIDMEM_SIZE_16M;
322	case 2: return AST_VIDMEM_SIZE_32M;
323	case 3: return AST_VIDMEM_SIZE_64M;
324	}
325	return AST_VIDMEM_DEFAULT_SIZE;
326	}
327
328	int ast_driver_load(struct drm_device *dev, unsigned long flags)
329	{
330	struct ast_private *ast;
331	int ret = 0;
332
333	ast = kzalloc(sizeof(struct ast_private), GFP_KERNEL);
334	if (!ast)
335	return -ENOMEM;
336
337	dev->dev_private = ast;
338	ast->dev = dev;
339
340	ast->regs = pci_iomap(dev->pdev, 1, 0);
341	if (!ast->regs) {
342	ret = -EIO;
343	goto out_free;
344	}
345	ast->ioregs = pci_iomap(dev->pdev, 2, 0);
346	if (!ast->ioregs) {
347	ret = -EIO;
348	goto out_free;
349	}
350
351	ast_detect_chip(dev);
352
353	if (ast->chip != AST1180) {
354	ast_get_dram_info(dev);
355	ast->vram_size = ast_get_vram_info(dev);
356	DRM_INFO("dram %d %d %d %08x\n", ast->mclk, ast->dram_type, ast->dram_bus_width, ast->vram_size);
357	}
358
359	ret = ast_mm_init(ast);
360	if (ret)
361	goto out_free;
362
363	drm_mode_config_init(dev);
364
365	dev->mode_config.funcs = (void *)&ast_mode_funcs;
366	dev->mode_config.min_width = 0;
367	dev->mode_config.min_height = 0;
368	dev->mode_config.preferred_depth = 24;
369	dev->mode_config.prefer_shadow = 1;
370
371	if (ast->chip == AST2100 \|\|
372	ast->chip == AST2200 \|\|
373	ast->chip == AST2300 \|\|
374	ast->chip == AST1180) {
375	dev->mode_config.max_width = 1920;
376	dev->mode_config.max_height = 2048;
377	} else {
378	dev->mode_config.max_width = 1600;
379	dev->mode_config.max_height = 1200;
380	}
381
382	ret = ast_mode_init(dev);
383	if (ret)
384	goto out_free;
385
386	ret = ast_fbdev_init(dev);
387	if (ret)
388	goto out_free;
389
390	return 0;
391	out_free:
392	kfree(ast);
393	dev->dev_private = NULL;
394	return ret;
395	}
396
397	int ast_driver_unload(struct drm_device *dev)
398	{
399	struct ast_private *ast = dev->dev_private;
400
401	ast_mode_fini(dev);
402	ast_fbdev_fini(dev);
403	drm_mode_config_cleanup(dev);
404
405	ast_mm_fini(ast);
406	pci_iounmap(dev->pdev, ast->ioregs);
407	pci_iounmap(dev->pdev, ast->regs);
408	kfree(ast);
409	return 0;
410	}
411
412	int ast_gem_create(struct drm_device *dev,
413	u32 size, bool iskernel,
414	struct drm_gem_object **obj)
415	{
416	struct ast_bo *astbo;
417	int ret;
418
419	*obj = NULL;
420
421	size = roundup(size, PAGE_SIZE);
422	if (size == 0)
423	return -EINVAL;
424
425	ret = ast_bo_create(dev, size, 0, 0, &astbo);
426	if (ret) {
427	if (ret != -ERESTARTSYS)
428	DRM_ERROR("failed to allocate GEM object\n");
429	return ret;
430	}
431	*obj = &astbo->gem;
432	return 0;
433	}
434
435	int ast_dumb_create(struct drm_file *file,
436	struct drm_device *dev,
437	struct drm_mode_create_dumb *args)
438	{
439	int ret;
440	struct drm_gem_object *gobj;
441	u32 handle;
442
443	args->pitch = args->width * ((args->bpp + 7) / 8);
444	args->size = args->pitch * args->height;
445
446	ret = ast_gem_create(dev, args->size, false,
447	&gobj);
448	if (ret)
449	return ret;
450
451	ret = drm_gem_handle_create(file, gobj, &handle);
452	drm_gem_object_unreference_unlocked(gobj);
453	if (ret)
454	return ret;
455
456	args->handle = handle;
457	return 0;
458	}
459
460	int ast_dumb_destroy(struct drm_file *file,
461	struct drm_device *dev,
462	uint32_t handle)
463	{
464	return drm_gem_handle_delete(file, handle);
465	}
466
467	int ast_gem_init_object(struct drm_gem_object *obj)
468	{
469	BUG();
470	return 0;
471	}
472
473	void ast_bo_unref(struct ast_bo **bo)
474	{
475	struct ttm_buffer_object *tbo;
476
477	if ((*bo) == NULL)
478	return;
479
480	tbo = &((*bo)->bo);
481	ttm_bo_unref(&tbo);
482	if (tbo == NULL)
483	*bo = NULL;
484
485	}
486	void ast_gem_free_object(struct drm_gem_object *obj)
487	{
488	struct ast_bo *ast_bo = gem_to_ast_bo(obj);
489
490	if (!ast_bo)
491	return;
492	ast_bo_unref(&ast_bo);
493	}
494
495
496	static inline u64 ast_bo_mmap_offset(struct ast_bo *bo)
497	{
498	return bo->bo.addr_space_offset;
499	}
500	int
501	ast_dumb_mmap_offset(struct drm_file *file,
502	struct drm_device *dev,
503	uint32_t handle,
504	uint64_t *offset)
505	{
506	struct drm_gem_object *obj;
507	int ret;
508	struct ast_bo *bo;
509
510	mutex_lock(&dev->struct_mutex);
511	obj = drm_gem_object_lookup(dev, file, handle);
512	if (obj == NULL) {
513	ret = -ENOENT;
514	goto out_unlock;
515	}
516
517	bo = gem_to_ast_bo(obj);
518	*offset = ast_bo_mmap_offset(bo);
519
520	drm_gem_object_unreference(obj);
521	ret = 0;
522	out_unlock:
523	mutex_unlock(&dev->struct_mutex);
524	return ret;
525
526	}
527